Voice Identification( MATLAB 2008/2009a) URGENT!!!

The project should capture the voice when it started and begin to record voice. then recorded voice need to be compared with prerecorded database in order to get result (that is, is it match? or not?), and create some appropriate user interface for the same ( The voice identification need to be done within few seconds, weitage would be given for the person who develops software requiring time of about 5 to 8 sec interval of getting the answer, this is a MS level project, Duration only 7 days)